Quick-acting gauge



Sept. 15. 1925, l 1,553,387

D. MCDERMOTT QUICK AQTING GAUGE Filed Aug. 14. 1924 Patented Sept. 15, 1925.

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arles-.aseme- #Emissies fue@ Meer 14,.. 19.24 serial. Navgtl.-

ies sans@ White may be manaael'fedi at Smallest aad vhiehfis. very.- eeev@ @10.-- Qratiee These Qbifs as@ attained. by. .the mecha: nisanL illustrated inthe accompanying the purses@ Of illustraties the invert: tion',1 one. pret'eigred form J@hereof is illustrated in. the drawings, f this f form. having beenljound to give,` satslactry and reliable j results although it is tobe understocd that the various instrumentalitiesbf which the invention consists can be variously arranged andv qrganizled' and thei-ngventionis not lirnited tothe precise arrangement and organization of these instrumentalities as herein shown and described except as required by the scope of the appended claims.

Of the drawings: Figure 1 represents a plan of a gauge ernbodying the principles of the present invention.

Figure 2 represents a vertical section of same on line 2, 2 on Fig. 1.

Figure 3 represents a transverse section of same on line 3, 3 on Figs; 1 and 2, and

Figure 4 represents a section of the straight edge and its bushing.

Similar characters indicate like parts throughout the several figures of the ldrawings. f

In the drawings 10 is a head having two upwardly extending ears 11, 11 forming a recess 12 having a flat bottom face 13 on which is formed a graduated scale 14.

One end of the head 10 has a cylindrical socket therein to receive the projecting end of a bushing 15, the opposite end of which is driven into a straight edge 16.

This straight edge 16 may be of equal thickness throughout as indicated in Fig. 2 or it may be tapered as shown in Fig. 4.

The projecting end of the bushing 15 is retaine in the socket in head 1.0 by means of the set screw 17 The headlQ has a c yltindrical'hole 1.8 eX- tending' rlengthwise'. thereef in `which is slidably dsrsea ltd 19 having kheb 2.0 O11; ene;endthereof.`

' This rod 19 has sjafaced'markings "thereon" Such asftha "rines '21, Whehi arerilfefablv onefinch vapartl and the: scale 14 is preferably yaiinch..1;011-e-.' "i Y "0.1i 'the'end' ef; head 1.0 QlJPOSie' t0.- the straight edgelis a' projecting hub v22 Whiskas threaded Split @assistita weer O11 this 111.11922' is threaded 11ut23 which. may' be adjusted 01.1, Said? "heb t0 sans@ the Separated portions 0f Said heb t@ impiega 1119011 the red" '19 and damnit i112 adjusted. PQ"- Stiorl..`

'.'Thf nefmal. @sitio-1110i thelod, is with 011.@ end flush the `face 24 of the straight edge 16 anld ll'JS irst ring 21 registering with thefzero; Ina-rk of said gradiiated scale;

"Hue fold:leismcvsrmawie in deetion of arrow. t to project an'end thereof beyoud the ece Qfiseagbredge .16 it iis Ob-4 vious that the ring 21 -will registerwith the graduations of said scale and indicate the exact distance that the end of said rod is projected beyond theface 24 of the straight edge 16.

When the face 24 of the straight Vedge 16 is planed oli the'bushing 15 may be so adjusted in the socket of said straight edge 16 that the end of rod 19 will be flush with face 24 when the first ring 21 is at Zero mark on the graduated scale 14.

The graduations of said scale 14 may be of such a character as to suit diiierent conditions.

The gauge may be used for obtaining the .depth of a socket or depression and for a variety of other purposes too numerous to mention.

As the gauge rod 19 is freely movable in the head 10 it is quick acting and the readings may be made instantly.

The graduated scale being formed in the bottom :tace 13 of the recess 12 it is protected from wear and therefore is always plainly visible.

The .operation and many advantages of the invention will be apparent without further description.

Having thus descirbed my invention, I claim: A

1. The combination of a head having a fiat faced recess; the face of which is provided With a graduated scale; and a rod slidable in said head and having markings thereon adapted to register With said scale, said markings being spaced apart a distance equal to the length of said scale. v

2. The combination of a head having a fiat faced recess, the face of which is provided With a graduated Scale extending from end to end of said recess; aorod slidable in said head and having markings thereon adapted to registerl With said scale, said markings being spaced apart a distance equal to the length of said recess; and a straight edge. on one end of said head.V

3.4 The co-mbination of a head having a flat faced recess, the face of which is provided vvith agraduated scale between the shouldered ends of said recess; ka rod slidable in said head and having peripheral rings thereon adapted to register with said scale, said rings being spaced apart4 a distance equal tothe length of said scale; a split threaded projection at one end of and formed integralwith said head; and clamping nut on said threaded projection.

.4. The combination of a head having formed therein at a pointy removed from the ends thereof, a flat faced recess having thereon a graduated scale of predetermined length; a rod slidable freely incsaid head and having a plurality of markings thereon spaced apart a distance'equal to the length of said scale; and means at one end of said head for clamping said rod in adjusted position. f

5. The combination of a head lia/.ving formed in its periphery a flat faced recess having thereon a graduated scale of predetermined length and provided at one e-nd WithY a socket; a straight edge having a projection adapted to be disposed in said socket; means for securing said projectionin saidsocket; a rod freely slidable in said head and straight edge and having a plu` rality of markings thereon spaced apart a distance .equal to said length of said scale With which said'markings are adapted to register; and means for locking said rod in adjusted position. l,

6. The combination of a headr having formed in its periphery a flat faced recess havingithereon agraduated scale of predetermined length andY provided 'at one end With a socket; Va straight edge having a projection adapted to bedisp'osed in said socket and moved `about the axis of said head-g means for securing said projection in lsaid socket; a rod freely slidable in said head and straight edge and having a plurality of markings thereon spaced apart a distance equal to said length of said scale with which said markings are adapted to register; and means for locking said rod in adjusted position. .y 'Y

Signed by me at Milford, Mass. this 12th day of July, 1924.

- y DAVID MGDERMOT'I.4 

